« Previous AbstractFine Particulate Organic Material at Meadview During the Project MOHAVE Summer Intensive Study    Next AbstractNature-inspired CaCO(3) loading TiO(2) composites for efficient and durable photocatalytic mineralization of gaseous toluene »

J Air Waste Manag Assoc

Title:		"Fine particulate organic material in the Los Angeles Basin-I: assessment of the high-volume Brigham Young University organic sampling system, BIG BOSS"
Author(s):		Cui W; Eatough DJ; Eatough NL;
Address:		"Department of Chemistry and Biochemistry, Brigham Young University, Provo, Utah, USA"
Journal Title:		J Air Waste Manag Assoc
Year:		1998
Volume:		48
Issue:		11
Page Number:		1024 - 1037
DOI:		10.1080/10473289.1998.10463760
ISSN/ISBN:		2162-2906 (Electronic) 1096-2247 (Linking)
Abstract:		"A multi-system, high-volume, parallel plate diffusion denuder Brigham Young University Organic Sampling System (BIG BOSS) was tested using collocated samplers at the Pico Rivera Monitoring Station of the South Coast Air Quality Management District, South Coast Air Basin, in September 1994. Six-hr daytime and 9-hr nighttime samples were collected with a flow of about 200 L/min through each of the three systems designed to collect particles smaller than 2.5, 0.8, and 0.4 microns in a diffusion denuder sampler. Efficiency for the removal of gas phase organic compounds by the diffusion denuder was evaluated using both theoretical predictions and field measurements. Both measured and calculated data indicate high denuder efficiency for the removal of gas phase aromatic and paraffinic compounds. The precision of the BIG BOSS was evaluated using collocated samplers. The precision of determination of total carbon and elemental carbon retained by a quartz filter or of semi-volatile carbonaceous material lost from particles during sampling averaged +/- 7%. The precision of determination of individual organic compounds averaged +/- 10%. An average of 42 and 62% of the particulate organic material was semi-volatile organic compounds (SVOCs) lost from particles during sampling for daytime and nighttime samples, respectively. This 'negative' sampling artifact was an order of magnitude larger than the 'positive' quartz filter artifact due to adsorption of gas phase organic material. Daytime concentrations of fine particulate elemental carbon and nonvolatile organic carbon were higher than nighttime concentrations, but nighttime fine particles contained more semi-volatile organic material than daytime"
Keywords:
Notes:		"PubMed-not-MEDLINECui, W Eatough, DJ Eatough, NL eng 1998/12/10 J Air Waste Manag Assoc. 1998 Nov; 48(11):1024-37. doi: 10.1080/10473289.1998.10463760"